Finding the Fourth Proportional to 206,438.36, 284,895.06 and 121,582.76
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Solution
The fourth proportional to 206,438.36, 284,895.06 and 121,582.76 is: 167,790.17
Step by Step Solution
- Step 1: Write the proportion equation
206,438.36 : 284,895.06 = 121,582.76 : x - Step 2: Convert to fraction form
206,438.36/284,895.06 = 121,582.76/x - Step 3: Cross multiply
206,438.36x = 284,895.06 × 121,582.76 - Step 4: Simplify right side
206,438.36x = 34,638,327,705.17 - Step 5: Solve for x
x = 34,638,327,705.17/206,438.36 - Step 6: Final answer
x = 167,790.17
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.